<template>
<nav-bar>
    <div slot="left" class="back" @click="backClick">
        <img src="~assets/img/common/back.svg" alt="">
    </div>
    <div slot="center" class="title" >
        <div v-for="(item,index) in titles" class="title-item"
        :class="{active:index === currentIndex}"
         @click="titleClick(index)">{{item}}</div>
    </div>
</nav-bar>
</template>

<script>
import NavBar from "components/common/navbar/NavBar";
export default {
  name: "DetailNavBar",
  components: {
    NavBar,
  },
  data(){
      return{
          titles:['商品', '参数', '评论', '推荐'],
          currentIndex:0
      }
  },
  methods:{
      titleClick(index){
          this.currentIndex = index,
          this.$emit('titleClick',index)
      },
      backClick(){
          this.$router.back()
      }
  }
};
</script>

<style scoped>
.title{
    display: flex;
}
.title-item{
    flex: 1;
}
.active{
    color:var(--color-high-text);
}
.back img{
    margin: 12px;
}
</style>